700+ warnings and 30+ errors when packaging

So I tried packaging my main project and got a bunch of errors. I opened up a default third person template and added my 5 or so asset packs I bought from the marketplace and still get the sameish amount of errors and packaging.

The final error was “Unknown Cooking error” and “cooking failed” or something like that.

Any idea why assets from the UE4 store wouldn’t work? I’ve checked and they all say they SHOULD work with 4.19

There can be a host of reasons, such as file names being too long, but we won’t know any of that until you actually post a screenshot of the errors you are getting.